Method and system for minimizing power consumption of user equipment during cell detection
A method and system for minimizing the battery power consumption of user equipment (UE) during inter-frequency cell detection in a heterogeneous network is disclosed. A serving cell in the heterogeneous network provides a relaxed cell detection indication to the UE on a specified frequency for cell detection. The UE applies the relaxed cell detection for detecting the cells on the specified frequency. During inter-frequency cell detection on specified frequency, the UE discards some normal measurement gaps. The inter-frequency cell detection is delayed as compared to normal cell detection time requirement using the normal measurement gaps. The UE deactivates the relaxed detection indication, upon detecting the inter-frequency cell and performs the continuous RSRP and RSRQ measurements for detected inter-frequency cell using all the normal measurement gaps to meet normal measurement accuracy and measurement reporting requirement.
1. A method for measuring a signal by a user equipment (UE) in a wireless communication system, the method comprising:
receiving, from a base station, information indicating that a specific frequency is configured for reduced measurement performance;
identifying a scaling factor associated with the reduced measurement performance, the scaling factor being used to scale measurement performance for the specific frequency; and
measuring, on the specific frequency, the signal during a first time period determined based on the scaling factor.
2. The method according to claim 1 , wherein the reduced measurement performance is associated with measurement during the first time period and a normal measurement performance is associated with measurement during a second time period.
3. The method according to claim 1 , wherein the information is received via system information in an idle mode.
4. The method according to claim 1 , wherein the information is received via a radio resource control (RRC) message including measurement information that provides measurement parameters in a connected mode.
5. The method according to claim 1 , wherein the reduced measurement performance is for measuring at least one of universal terrestrial radio access (UTRA) and evolved-UTRA (E-UTRA) frequency.
6. A user equipment (UE) in a wireless communication system, the UE comprising:
a transceiver; and
a controller coupled with the transceiver and configured to control to:
receive, from a base station, information indicating that a specific frequency is configured for reduced measurement performance;
identify a scaling factor associated with the reduced measurement performance, the scaling factor being used to scale measurement performance for the specific frequency; and
measure, on the specific frequency, a signal during a first time period determined based on the scaling factor.
7. The UE according to claim 6 , wherein the reduced measurement performance is associated with measurement during the first time period and a normal measurement performance is associated with measurement during a second time period.
8. The UE according to claim 6 , wherein the controller is configured to receive the information via system information in an idle mode.
9. The UE according to claim 6 , wherein the controller is configured to receive the information via a radio resource control (RRC) message including a measurement information that provides measurement parameters in a connected mode.
10. The UE according to claim 6 , wherein the reduced measurement performance is for measuring at least one of universal terrestrial radio access (UTRA) and evolved-UTRA (E-UTRA) frequency.
11. A method for transmitting information by a base station in a wireless communication system, the method comprising:
generating information indicating that a specific frequency is configured for reduced measurement performance; and
transmitting, to a user equipment (UE), the information indicating that the specific frequency is configured for the reduced measurement performance,
wherein a scaling factor is used to scale measurement performance for the specific frequency, and
wherein a signal is measured on the specific frequency by the UE during a first time period determined based on the scaling factor.
12. The method according to claim 11 , wherein the reduced measurement performance is associated with measurement during the first time period and a normal measurement performance is associated with measurement during a second time period.
13. The method according to claim 11 , wherein the information is transmitted via system information in an idle mode.
14. The method according to claim 11 , wherein the information is transmitted via a radio resource control (RRC) message including a measurement information that provides measurement parameters in a connected mode.
15. The method according to claim 11 , wherein the reduced measurement performance is for measuring at least one of universal terrestrial radio access (UTRA) and evolved-UTRA (E-UTRA) frequency.
16. A base station in a wireless communication system, the base station comprising:
a transceiver; and
a controller coupled with the transceiver and configured to control to:
generate information indicating that a specific frequency is configured for reduced measurement performance, and
transmit, to a user equipment (UE), of the information indicating that the specific frequency is configured for the reduced measurement performance,
wherein a scaling factor is used to scale measurement performance for the specific frequency, and
wherein a signal is measured on the specific frequency by the UE during a first time period determined based on the scaling factor.
17. The base station according to claim 16 , wherein the reduced measurement performance is associated with measurement during the first time period and a normal measurement performance is associated with measurement during a second time period.
18. The base station according to claim 16 , wherein the controller is configured to transmit the information via system information in an idle mode.
19. The base station according to claim 16 , wherein the controller is configured to transmit the information via a radio resource control (RRC) message including a measurement information that provides measurement parameters in a connected mode.
20. The base station according to claim 16 , wherein the reduced measurement performance is for measuring at least one of universal terrestrial radio access (UTRA) and evolved-UTRA (E-UTRA) frequency.